MATLAB BUILDER EX 1 Guide de l'utilisateur télécharger pdf (Page 47)

Handling Errors During a Method Call

3-13

Handling Errors During a Method Call

Errors that occur while creating a class instance or during a class method

create an exception in the current procedure. Visual Basic provides an

exception handling capability through the

On Error Goto <label> statement,

in which the program execution jumps to

<label> when an error occurs.

(

<label> must be located in the same procedure as the On Error Goto

statement). All errors are handled this way, including errors within the

original MATLAB code. An exception creates a Visual Basic

ErrObject object

in the current context in a variable called

Err. (See the Visual Basic for

Applications documentation for a detailed discussion on VBA error handling.)

All of the examples in this section illustrate the typical error trapping logic

used in function call wrappers for MATLAB Excel Builder components.

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MATLAB BUILDER EX 1 Guide de l'utilisateur Page 47